|Table of Contents|

Impact of Leakage of Sponge Facilities on Building at Loess Site in Xixian New Area of Shaanxi Province, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2020年第04期
Page:
560-568
Research Field:
工程地质
Publishing date:

Info

Title:
Impact of Leakage of Sponge Facilities on Building at Loess Site in Xixian New Area of Shaanxi Province, China
Author(s):
DENG Zhao-xian1;  WEN Xin2;  HU Zhi-ping2*;  CHAI Shao-bo2;  MA Yue1;  JI Guo-qiang1
(1. The Technology Research Center for the Sponge City, Fengxi New City Development and Construction Group Co. Ltd. of Shaanxi Xixian New Area, Xianyang 712002, Shaanxi, China; 2. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)
Keywords:
sponge city;  loess site;  building foundation;  leakage field;  foundation settlement;  flow-solid coupling;  leakage;  Shaanxi
PACS:
P642
DOI:
10.19814/j.jese.2020.04028
Abstract:
It always extends anti-seepage membrane for sponge facilities at loess site to avoid uneven settlement of foundation caused by rainwater infiltration. Accidental damage of anti-seepage membrane occurs in the construction process frequently. Discussing the risk caused by the local damage of anti-seepage membrane near the foundation of buildings is helpful to promote the construction of sponge city in similar areas. Based on a typical practical project in sponge city construction of Xixian new area in Shaanxi province, Geo Studio software was used to simulate leakage impact of sponge facilities near the building and to obtain the characteristics of soil saturation, foundation settlement and variation of soil stress distribution in the foundation after leakage; furthermore, the influence of rainwater infiltration at leakage point on the foundation was appraised. The results show that the leakage could cause uneven settlement of foundation; the closer the horizontal distance between leakage point and foundation edge, the greater the additional settlement; and the maximum settlement is about 4 mm, meeting the requirements of Code for Design of Building Foundation(GB 50007—2011). Besides, the influence of leakage on the foundation strength decreases rapidly when the horizontal distance between leakage point and foundation edge is more than 1 m; while the influence could be ignored once the horizontal distance is larger than 3 m. Under the background of the project, the possibility of foundation failure caused by leakage is small.

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Last Update: 2020-07-27